M45 V8-4.5L (VK45DE) (2006)
Install exhaust manifold gasket with its directional protrusion set upward.
A: Protrusion for confirming installation
<-: Above
Exhaust Manifold
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Install exhaust manifold and tighten mounting nuts in numerical order as shown in the figure.
A: Left bank
B: Right bank
<-: Engine front
NOTE: Tighten mounting nuts No. 1 to 4 in two steps. The numerical order No. 9 to 12 shown second steps.
Air Fuel Ratio Sensor
CAUTION:
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Before installing a new air fuel ratio sensor 1, clean exhaust system threads using oxygen sensor thread cleaner (commercial service tool:
J-43897-18 or J-43897-12), and apply anti-seize lubricant (commercial service tool).
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Do not over torque air fuel ratio sensor. Doing so may cause damage to the air fuel ratio sensor 1, resulting in MIL coming on.